3D pen capable of feeding out drawing materials of different colors simultaneously and a nozzle thereof

ABSTRACT

A 3D pen capable of feeding out drawing materials of different colors simultaneously, and a nozzle thereof having a heater tip, a first installation seat and a second installation seat; the heater tip and the first installation seat are fixedly connected with each other; the first installation seat and the second installation seat are fixedly connected with each other; an outer wall of the heater tip has a recessed portion provided with a winding portion for installation of a heating device; a right end of the heater tip is provided with a third insertion portion; the third insertion portion is connected with the first installation seat; at least three feeding channels independent of one another are provided inside the heater tip; two ends of each of the feeding channels extend to a left end surface and a right end surface of the heater tip respectively.

CROSS REFERENCE TO RELATED APPLICATIONS

The present invention is a divisional application of Ser. No. 15/884,356filed Jan. 30, 2018 claiming Chinese priority application 201710952298.Xfiled Oct. 12, 2017.

BACKGROUND OF THE INVENTION

The present invention relates to the field of 3D printing, and morespecifically relates to a 3D pen.

As 3D pens are more widely used nowadays, consumers' expectation for 3Dpens are growing higher. Most of the 3D pens now available in the marketcan only extrude a single color drawing material. When there is a needfor color change, the 3D pen has to be powered off and replaced withanother drawing material before being powered on again to operate.Usually, creating a work product requires more than one color.Therefore, operators have to change the drawing materials of differentcolors frequently during the drawing process. Such a frequent change ofdrawing materials occupies much of an operator's time and lower hisworking efficiency, and it is so bothering that the operator may beaffected of his creation of the work product.

In actual use, a work product may need a color which is a blend ofdifferent colors. Since the 3D pens of the prior art can only extrude asingle color drawing material at one time, but cannot extrude drawingmaterials of different colors simultaneously, it is not possible for theprior art 3D pens to blend different colors and extrude a mixed color.

Therefore, the market requires a novel 3D pen capable of changing colorsquickly to increase the operators' working efficiency as well asachieving the function of color blending.

BRIEF SUMMARY OF THE INVENTION

To fulfill the above objects, the present invention has the followingtechnical solution:

A 3D pen capable of feeding out drawing materials of different colorssimultaneously, comprising a shell and a power source disposed insidethe shell, a control mechanism, transmission mechanisms, feedingmechanisms and a nozzle; the shell and the control mechanism areconnected with each other; the control mechanism is electricallyconnected with the power source; the control mechanism is electricallyconnected also with the transmission mechanisms; the transmissionmechanisms are connected with the feeding mechanisms by partiallysleeving the feeding mechanisms; the feeding mechanisms are connectedwith the nozzle by being partially inserted into the nozzle.

The shell comprises an upper shell and a lower shell; the upper shelland the lower shell are fixedly connected with each other; the uppershell and the control mechanism is fixedly connected with each other;the lower shell and the nozzle are fixedly connected.

The upper shell is provided with several material inlet holes, a holefor the power source, a display window, a temperature adjustment button,a transmission control button, a switch button, and a speed adjustmentbutton; the material inlet holes and the hole for the power source aredisposed at a right end surface of the upper shell; the material inletholes are positioned with respect to the hole for the power source beinga center.

The control mechanism comprises a microprocessor control unit (MCU) of amain board, a display device, a transmission control device, atemperature adjustment device and a speed adjustment device; the displaydevice, the transmission control device, the temperature adjustmentdevice and the speed adjustment device are electrically connected withthe MCU; the MCU is electrically connected with the hole for the powersource and the transmission mechanisms.

There are several said transmission mechanisms; the transmissionmechanisms are electrically connected with the MCU; the transmissionmechanisms have identical structures.

Each of the transmission mechanisms has a worm gear motor and a wormgear motor supporting panel; the worm gear motor and the worm gear motorsupporting panel are fixedly connected; the worm gear motor and the MCUare electrically connected; the worm gear motor supporting panel isconnected with a corresponding feeding mechanism by partially sleevingthe corresponding feeding mechanism.

There are several said feeding mechanisms; the feeding mechanisms haveidentical structures; a quantity of the feed mechanisms is the same as aquantity of the transmission mechanisms; the feeding mechanisms areconnected with the transmission mechanisms respectively.

A nozzle of a 3D pen comprises a heater tip, a first installation seatand a second installation seat; the heater tip and the firstinstallation seat are fixedly connected with each other by insertion;the first installation seat and the second installation seat are fixedlyconnected with each other by insertion; wherein an outer wall of theheater tip has a recessed portion provided with a winding portion forinstallation of a heating device; a right end of the heater tip isprovided with a third insertion portion; the third insertion portion isconnected with the first installation seat by insertion; at least threefeeding channels independent of one another are provided inside theheater tip; two ends of each of the feeding channels extend to a leftend surface and a right end surface of the heater head respectively.

A pen tip is also provided; the pen tip sleeves a front end of a heatertip.

A left end of the first installation seat is provided with a firstsleeving portion; the third insertion portion of the heater tip isconnected with the first sleeving portion of the first installation seatby insertion.

A right end of the first installation seat is provided with a firstinsertion portion; the first insertion portion is connected with thesecond installation seat by insertion.

At least three first connection channels independent of one another areprovided inside the first installation seat; two ends of each of thefirst connection channels extend to a left end surface and a right endsurface of the first installation seat respectively.

A right end of the second installation seat is provided with a secondinsertion portion; the first insertion portion of the first installationseat is connected with the second sleeving portion of the secondinstallation seat by insertion.

At least three second connection channels independent of one another areprovided inside the second installation seat; two ends of each of thesecond connection channels extend to a left end surface and a right endsurface of the second installation seat respectively.

The first connection channels of the first installation seat are incommunication with the second connection channels of the secondinstallation seat respectively.

The present invention has the following beneficial effects: The presentinvention enables users to install all the required drawing materialsinto the 3D pen all at the same time before starting to draw. When it isnecessary to change color, it is only required to press the controlbutton to extrude the material having the desired color and there is noneed to power off the pen and restart it again. Therefore, operatingtime is saved and the working efficiency of the user is increased. Sinceit is not required to change drawing materials, users may not be sobothered so that they can be more focused on their creation.

A nozzle of the 3D pen is also given. The feeding channels can feedmaterials at the same time, and the materials gathered in the pen tipwill be mixed in the pen tip to attain evenly blended color. By usingthe three primary colors, the desired colors of the work product can becreated. In other words, By outputting the three primary colors (red,green and blue) at different outputting speed, the three primary colorsare mixed according to determined ratio to attain a desired mixed colorfor the work product, and then the pen will extrude this mixed color. Bysaving complicated procedures, the passion of the user for creating workproducts can be significantly elevated.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described in detail below withreference to the drawings. However, the drawings do not constitute anylimitation to the present invention.

FIG. 1 is a front perspective view showing a structure of a 3D pencapable of feeding out drawing materials of different colorssimultaneously according to the present invention.

FIG. 2 is a front perspective view showing an internal structure of the3D pen capable of feeding out drawing materials of different colorssimultaneously according to the present invention.

FIG. 3 is a rear perspective view showing the internal structure of the3D pen capable of feeding out drawing materials of different colorssimultaneously according to the present invention.

FIG. 4 is a structural view of a nozzle of the 3D pen of the presentinvention.

FIG. 5 is a schematic view of a heater tip of the nozzle of the 3D penof the present invention.

FIG. 6 is a sectional view of the heater tip of the nozzle of the 3D penof the present invention.

FIG. 7 is the sectional views of the first installation seat and thesecond installation seat of the nozzle of the 3D pen of the presentinvention.

FIG. 8 is a structural view of another nozzle according to the 3D pen ofthe present invention.

REFERENCE SIGNS IN THE FIGURES

1—shell, 2—control mechanism, 201—MCU of a main board, 202—displaydevice, 203—transmission control device, 204—temperature control device,205—speed adjustment device, 3—transmission mechanisms, 301—worm gearmotor, 3011—worm, 302—worm gear motor supporting panel, 3021—sleeveportion, 30211—trough, 4—feeding mechanisms, 5—nozzle, 501—heater tip,502—first installation seat, 503—second installation seat, 5011—firstfeeding channels, 5012—winding portion, 5013—third insertion portion,5021—first connection channels, 5022—first sleeving portion, 5023—firstinsertion portion, 5031—second connection channels, 5032—second sleevingportion, 5033—second insertion portion, 504—pen tip

DETAILED DESCRIPTION OF THE INVENTION

The present invention is described further in detail below withreference to the drawings. All directional references described beloware based on the position of the present invention shown in FIG. 1.

As shown in FIGS. 1-8, a 3D pen capable of changing colors quicklycomprises a shell 1 and a power source disposed inside the shell 1, acontrol mechanism 2, transmission mechanisms 3, feeding mechanisms 4, anozzle 5 and a pen tip 504; the shell 1 and the control mechanism 2 areconnected with each other; the control mechanism 2 is electricallyconnected with the power source; the control mechanism 2 is electricallyconnected also with the transmission mechanisms 3; the transmissionmechanisms 3 are connected with the feeding mechanisms 4 by partiallysleeving the feeding mechanisms; the feeding mechanisms 4 are connectedwith the nozzle 5 by being partially inserted into the nozzle 5; the pentip is connected with the nozzle 5 by partially sleeving the nozzle 5.

The shell 1 comprises an upper shell and a lower shell; the upper shelland the lower shell are connected with each other by insertion; theupper shell and the control mechanism 2 is connected with the controlmechanism by buckling; the lower shell and the nozzle 5 are fixedlyconnected; the upper shell and the lower shell together form a closedpen shaft for grabbing while leaving a cavity inside to accommodate thenozzle 5, the power source, the control mechanism 2, the transmissionmechanisms 3 and the feeding mechanisms 4.

The upper shell has a front surface and a back surface; the upper shellis provided with three material inlet holes, a hole for the powersource, a display window, a temperature adjustment button, atransmission control button, a switch button, and a speed adjustmentbutton; the three material inlet holes and the hole for the power sourceare disposed at a right end surface of the upper shell; the threematerial inlet holes are positioned with respect to the hole for thepower source being a center to facilitate material inlet and batteryrecharge; the display window, the temperature adjustment button, thetransmission control button, the switch button, and the speed adjustmentbutton are arranged sequentially from top to bottom along a middlesection of the front surface of the upper shell. The upper shell is aprior art and hence will not be described here in detail.

The lower shell is an integral hollowed structure to facilitatedissipation of heat produced by the heater tip so that the 3D pen canhave a longer service life. The lower shell is also a prior art andhence will not be described here in detail.

The control mechanism 2 comprises a microprocessor control unit (MCU)201 of a main board, a display device 202, a transmission control device203, a temperature adjustment device 204 and a speed adjustment device205; the display device 202, the transmission control device 203, thetemperature adjustment device 204 and the speed adjustment device 205are electrically connected with the MCU 201; the MCU 201 is electricallyconnected with the hole for the power source and the transmissionmechanisms; the MCU 201, the display device 202, the transmissioncontrol device 203, the temperature adjustment device 204 and the speedadjustment device 205 are prior arts and hence will not be describedhere in detail.

There are three said transmission mechanisms 3; the three transmissionmechanisms 3 are electrically connected with the MCU 201; the threetransmission mechanisms 3 have identical structures. Each of thetransmission mechanisms 3 has a worm gear motor 301 and a worm gearmotor supporting panel 302; the worm gear motor 301 and the worm gearmotor supporting panel 302 are fixedly connected; the worm gear motor301 and the MCU 201 are electrically connected; the worm gear motorsupporting panel 302 is connected with a corresponding feeding mechanism4 by partially sleeving the corresponding feeding mechanism 4.

The worm gear motor 301 comprises a worm 3011 rotably connected with acorresponding feeding mechanism 4. The worm gear motor is a prior artand hence will not be described here in detail.

The worm gear motor supporting panel 302 comprises a sleeve portion 3021having a cylindrical shape; the sleeve portion 3021 comprises a trough30211; the worm passes through the trough 30211 to be rotably connectedwith the corresponding feeding mechanism 4; the worm 3011 controls aspeed of the corresponding feeding mechanism 4.

There are three of said feeding mechanisms 4. The three feedingmechanisms 4 are connected with the three transmission mechanisms 3respectively; the three feeding mechanisms 4 have identical structures;each of the feeding mechanisms 4 comprises an upper guiding tube and alower guiding tube; the upper guiding tube and the lower guiding tubeare in communication with each other; the upper guiding tube and thelower guiding tube are partially inserted into a respective sleeveportion 3021 to be rotably connected with a respective worm 3011.

The nozzle 5 comprises a heater tip 501, a first installation seat 502and a second installation seat 503; the heater tip 501 and the firstinstallation seat 502 are fixedly connected by insertion; the firstinstallation seat 502 and the second installation seat 503 are fixedlyconnected with each other by insertion.

First feeding channels independent of one another are provided insidethe heater tip 501; a quantity of the first feeding channels is three;two ends of each of the first feeding channels extend to a left endsurface and a right end surface of the heater tip 501 respectively; anouter wall of the heater tip 501 has a recessed portion provided with awinding portion for installation of a heating device (heating wire); aright end of the heater tip 501 is provided with a third insertionportion.

First connection channels independent of one another are provided insidethe first installation seat 502; a quantity of the first connectionchannels is three; two ends of each of the first connection channelsextend to a left end surface and a right end surface of the firstinstallation seat 502 respectively; a left end of the first installationseat is provided with a first sleeving portion; a right end of the firstinstallation seat is provided with a first insertion portion; the thirdinsertion portion of the heater tip 501 is fixedly connected with thefirst sleeving portion of the first installation seat 502 by insertion,so that the three first feeding channels of the heater tip 501 are incommunication with the three first connection channels of the firstinstallation seat 502 respectively.

Second connection channels independent of one another are providedinside the second installation seat 503; a quantity of the secondconnection channels is three; two ends of each of the second connectionchannels extend to a left end surface and a right end surface of thesecond installation seat 503 respectively; a left end of the secondinstallation seat 503 is provided with a second sleeving portion; aright end of the second installation seat 503 is provided with a secondinsertion portion; the first insertion portion of the first installationseat 502 is fixedly connected with the second sleeving portion of thesecond installation seat 503 by insertion, so that the three firstconnection channels of the first installation seat 502 are incommunication with the three second connection channels of the secondinstallation seat 503 respectively; the second insertion portion of thesecond installation seat 503 is connected with the feeding mechanisms bypartially sleeving the feeding mechanisms.

The pen tip has a conical shape; a larger end of the pen tip sleeves afront end of the heater tip 501. The three first feeding channelsindependent of one another inside the heater tip 501 extrude materialsof three different colors, and the three different colors are mixed andblended evenly inside the pen tip before feeding out to draw a 3Dobject. The 3D object can be drawn with the colors desired by mixing andblending the three primary colors into different desired colors.

A nozzle of a 3D pen capable of feeding out drawing materials ofdifferent colors simultaneously comprises a heater tip 501, a firstinstallation seat 502, a second installation seat 503 and a pen tip 504;the nozzle 5 and the first installation seat 502 are fixedly connectedwith each other by insertion; the first installation seat 502 and thesecond installation seat 503 are fixedly connected with each other byinsertion.

First feeding channels 5011 independent of one another are providedinside the nozzle 5; a quantity of the first feeding channels 5011 isthree; two ends of each of the first feeding channels extend to a leftend surface and a right end surface of the nozzle 5 respectively; anouter wall of the heater tip 501 has a recessed portion provided with awinding portion 5012 for installation of a heating device (heatingwire); a right end of the nozzle 5 is provided with a third insertionportion 5013.

First connection channels 5021 independent of one another are providedinside the first installation seat 502; a quantity of the firstconnection channels is three; two ends of each of the first connectionchannels 5021 extend to a left end surface and a right end surface ofthe first installation seat 502 respectively; a left end of the firstinstallation seat 502 is provided with a first sleeving portion 5022; aright end of the first installation seat 502 is provided with a firstinsertion portion 5023; the third insertion portion 5013 of the heatertip 501 is fixedly connected with the first sleeving portion 5022 of thefirst installation seat 502 by insertion, so that the three firstfeeding channels 5011 of the heater tip 501 are in communication withthe three first connection channels 5021 of the first installation seat502 respectively.

Second connection channels 5031 independent of one another are providedinside the second installation seat 503; a quantity of the secondconnection channels 5031 is three; two ends of each of the secondconnection channels 5031 extend to a left end surface and a right endsurface of the second installation seat 503 respectively; a left end ofthe second installation seat 503 is provided with a second sleevingportion 5032; a right end of the second installation seat 503 isprovided with a second insertion portion 5033; the first insertionportion 5022 of the first installation seat 502 is fixedly connectedwith the second sleeving portion 5031 of the second installation seat503 by insertion, so that the three first connection channels 5021 ofthe first installation seat 502 are in communication with the threesecond connection channels 5031 of the second installation seat 503respectively; the second insertion portion of the second installationseat 503 is connected with other structures of the 3D pen.

FIG. 8 shows a pen tip 504 sleeving a front end of the heater tip. Byusing the pen tip 504, the drawing materials coming out from the threefeeding channels are mixed and blended inside the pen tip to createdesired colors for drawing.

The above detailed and specific description only shows some embodimentsof the present invention. The above description should not be understoodas limiting the scope of the present invention. It should be noted that,a person skilled in this field of art may carry out various changes andmodifications without deviating from the inventive concept of thepresent invention, and all these changes and modifications should fallwithin the scope of protection of the present invention. The scope ofprotection of the present invention is defined by the appended claims.

What is claimed is:
 1. A nozzle of a 3D pen capable of feeding outdrawing materials of different colors simultaneously, comprising aheater tip, a first installation seat and a second installation seat;the heater tip and the first installation seat are fixedly connectedwith each other by insertion; the first installation seat and the secondinstallation seat are fixedly connected with each other by insertion;wherein an outer wall of the heater tip has a recessed portion providedwith a winding portion for installation of a heating device; a right endof the heater tip is provided with a third insertion portion; the thirdinsertion portion is connected with the first installation seat byinsertion; at least three feeding channels independent of one anotherare provided inside the heater tip; two ends of each of the feedingchannels extend to a left end surface and a right end surface of theheater tip respectively.
 2. The nozzle of claim 1, wherein the nozzlealso comprises a pen tip; the pen tip sleeves a front end of the heatertip.
 3. The nozzle of claim 1, wherein a left end of the firstinstallation seat is provided with a first sleeving portion; the thirdinsertion portion of the heater tip is connected with the first sleevingportion of the first installation seat by insertion.
 4. The nozzle ofclaim 3, wherein a right end of the first installation seat is providedwith a first insertion portion; the first insertion portion is connectedwith the second installation seat by insertion.
 5. The nozzle of claim4, wherein at least three first connection channels independent of oneanother are provided inside the first installation seat; two ends ofeach of the first connection channels extend to a left end surface and aright end surface of the first installation seat respectively;
 6. Thenozzle of claim 5, wherein a right end of the second installation seatis provided with a second insertion portion; the first insertion portionof the first installation seat is connected with a second sleevingportion of the second installation seat by insertion.
 7. The nozzle ofclaim 6, wherein at least three second connection channels independentof one another are provided inside the second installation seat; twoends of each of the second connection channels extend to a left endsurface and a right end surface of the second installation seatrespectively.
 8. The nozzle of claim 7, wherein the first connectionchannels of the first installation seat are in communication with thesecond connection channels of the second installation seat respectively.